Previous Article | Next Article ![]()
Infect. Immun., 02 1997, 446-451, Vol 65, No. 2
A Roggenkamp, AM Geiger, L Leitritz, A Kessler and J Heesemann
The V antigen is a 37-kDa secreted polypeptide encoded on the 70-kb
virulence plasmid of pathogenic Yersinia spp. Besides having regulatory
functions, it is known to be a virulence factor and a protective antigen.
DNA sequencing of the most common serotypes of human pathogenic Yersinia
enterocolitica and Y. pseudotuberculosis revealed that two evolutionary
distinct types of V antigen exist in Yersinia spp. One type is represented
by Y. enterocolitica serotype 08 strains WA, WA-314, and NCTC 10938
(designated LcrV-YenO8); the other type comprises Y. pestis, Y.
pseudotuberculosis, and Y. enterocolitica serotypes O3, O9, and O5,27
(LcrV-Yps). A hypervariable region between amino acids 225 and 232
represents the main difference between the two types. By raising
monospecific antisera against both types of V antigen (anti-rVO8 and
anti-rVO3), we were able to demonstrate that, in general, passive
immunization of mice against a challenge with yersiniae was possible with
both anti-Y. enterocolitica V antigen sera. However, anti-V antigen serum
was protective only if the immunizing V antigen was the same type as the V
antigen produced by the infective strain. The failure of the American V
antigen type represented by Y. enterocolitica serotype O8 to protect
against Yersinia spp. carrying the other V antigen type (LcrV-Yps) could be
an explanation for the presence of plague foci in American countries.
Copyright © 1997, American Society for Microbiology
Passive immunity to infection with Yersinia spp. mediated by anti- recombinant V antigen is dependent on polymorphism of V antigen
Max von Pettenkofer Institute for Hygiene and Microbiology, Ludwig Maximilian University of Munich, Germany.
This article has been cited by other articles:
Copyright © 2009 by the American Society for Microbiology. For an alternate route to Journals.ASM.org, visit: http://intl-journals.asm.org | More Info»